Polaroid, display module and processing method of polaroid

Abstract

According to a polaroid, a display module and a processing method of the polaroid, the polaroid can be better attached to the curved surface cover plate, and the beneficial technical effects of beingfree of wrinkles and color fading and smooth in appearance are achieved. The polaroid is made of a telescopic material, is shaped into a curved surface shape through a hot-pressing process, and comprises a polarizing functional layer, the polarizing functional layer is used for converting light passing through the polarizing functional layer into linearly polarized light from natural light, and protecting a protective layer of the polarizing functional layer, wherein the polarizing functional layer and the protective layer are both made of telescopic materials. The display module comprises a flexible display screen, the polaroid and a curved surface cover plate which are sequentially stacked in the light emitting direction. The polaroid processing method comprises the steps of placing a polaroid to be machined on a curved surface profiling base table; and enabling the polaroid to have a curved surface shape corresponding to the shape of the curved surface profiling base station througha hot pressing process.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a polarizer, a display module and a processing method for the polarizer. Background technique [0002] In the prior art, OLED (Organic Light-Emitting Diode), as an emerging light-emitting device, is widely used in the field of mobile display due to its characteristics of self-luminescence, high contrast, and flexible display. For terminal displays represented by mobile phones, ultra-high screen-to-body ratio and four-curved screens are the focus of future display competition. [0003] The four-curved screen is a display screen in which the left, right, top, and bottom borders are bent to one side of the screen with a certain radius of curvature. It has a beautiful appearance and a round and superior grip. However, in the manufacturing process of the four-curved screen, the advancement of mass production is hindered due to the difficulty in bonding. This is because in...

AI Technical Summary

Problems solved by technology

However, in the manufacturing process of the four-curved screen, the advancement of mass production is hindered due to the difficulty of lamination

This is because in the design of the four-curved frame, a curved surface with a certain spherical angle is formed in the four-corner area where the curved surfaces intersect. The stress and strain in this area are unevenly distributed in the two-dimensional direction and are anisotropic. Bonded functional film layers such as polarizers are likely to cause problems such as lamination wrinkles, insufficient contact, and voids

[0004] like figure 1 As shown, after the traditional polarizer 10' is bonded to the four-sided curved cover, it will also cause the problem of wrinkles 11' in the spherical bonding area A' of the four corners. The reason for this problem is that it needs to be bonded The area of ​​the polarizer is different from that of the four-sided curved cover, and the polarizer has a supporting substrate such as COP (Cyclo Olefin Polymer, cycloolefin polymer), TAC (Triacetyl Cellulose, triacetyl cellulose), PMMA (polymethyl methacrylate, poly The protection of materials such as methyl methacrylate) has a high modulus of the protective substrate, and it is not easy to stretch and shrink, so that the stress distribution on the bonding interface is uneven, causing wrinkles on the polarizer, and, due to insufficient bonding, It is easy to generate air bubbles, causing the undesirable occurrence of cracks at the interface of the film layer

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